woman working comfortably on her bed

Portable air conditioning units are a great way to cool your home without the expense of a central air system. They can be easily moved from room to room and can even be taken with you if you move house. However, with so many different models and features available, it can be difficult to determine which one is best suited to your needs. In this article, we will provide a guide to selecting the perfect portable AC for your house.

1. Determine the Size of the Room

The first step in selecting a portable AC is to determine the size of the room that you want to cool. This will help you to determine the capacity of the unit that you need. Portable ACs are typically rated by the British Thermal Unit (BTU), which is a measure of cooling capacity. As a rule of thumb, you will need around 20 BTUs for each square metre of space that you want to cool. For example, if your room is 20 square metres, you will need a portable AC with a cooling capacity of at least 400 BTUs.

2. Consider the Noise Level

Another vital factor to consider is the noise level of the portable AC. Some units can be quite noisy, which can be a problem if you plan to use the unit in a bedroom or other quiet space. Look for units that are designed to operate quietly, and check the decibel (dB) ratings to ensure that they are within an acceptable range.

3. Check the Energy Efficiency

It is essential to take into consideration the energy efficiency of portable air conditioners since such appliances might consume a significant amount of power. Look for models that have received the Energy Star certification since this indicates that they have been engineered to save more energy than other models that have not received this certification. In addition, you should seek models that have features that can help reduce energy use, such as programmable thermostats and sleep modes.

4. Consider the Type of Venting

Ventilation is necessary for portable air conditioners in order to remove hot air from the room. Single-hose and dual-hose venting are the two most common types of venting systems. Single-hose units are less expensive and easier to install, but they can be less efficient since they suck in warm air from the room to cool the condenser. These units are advantageous because of their lower cost and ease of installation.

Dual hose systems are more efficient than single hose systems because they employ one hose to pull in air from the outside in order to cool the condenser and another hose to expel hot air outside. On the other hand, they could be more expensive and require more effort to set up.

5. Look for Additional Features

Finally, consider any additional features that you may require. For example, if you plan to use the portable AC in a bedroom, you may want to look for units with a sleep mode that gradually adjusts the temperature throughout the night. Other features to consider include remote control, programmable timer, and air purifying filters.


Selecting the perfect portable AC for your house requires careful consideration of several factors. These include the size of the room, the noise level, the energy efficiency, the type of venting, and any additional features that you may require. By taking the time to consider these factors, you can ensure that you select a portable AC that meets your needs and provides effective and efficient cooling for your home.

If you are looking for a portable AC hire in London, look no further than our amazing selections here at London Climate Hire. We are your HVAC specialists, providing the complete Turnkey rental solution, and our selections include boiler chillers, heaters, portable air-conditioning, generators, and ancillaries. Call us today for more information about our portable ACs and our rental fees.